1 /*
2  * Copyright (c) 2024 Huawei Device Co., Ltd.
3  * Licensed under the Apache License, Version 2.0 (the "License");
4  * you may not use this file except in compliance with the License.
5  * You may obtain a copy of the License at
6  *
7  *     http://www.apache.org/licenses/LICENSE-2.0
8  *
9  * Unless required by applicable law or agreed to in writing, software
10  * distributed under the License is distributed on an "AS IS" BASIS,
11  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
12  * See the License for the specific language governing permissions and
13  * limitations under the License.
14  */
15 #ifndef BASE_MACROS_H
16 #define BASE_MACROS_H
17 
18 #define ROLE(role) Get##role()
19 #define ROLE_PROTO_TYPE(role) role& ROLE(role) const
20 #define USE_ROLE(role) virtual ROLE_PROTO_TYPE(role) = 0
21 #define HAS_ROLE(role) USE_ROLE(role)
22 
23 #define IMPL_ROLE(role)                                        \
24 ROLE_PROTO_TYPE(role) override                                 \
25 {                                                              \
26     return const_cast<role&>(static_cast<const role&>(*this)); \
27 }
28 
29 #endif
30